A regional school administration office in Alberta was having problems with their sewer system. Sewer blockages were frequently causing raw sewage to back up through floor drains in the washrooms. The cast iron, main sewer pipe in the facility was heavily corroded and ran underneath the main hallway in the facility for the entire length of the hallway. The problem had been keeping the regional director of maintenance up at night for over a year.
The traditional repair would have involved:
- Extensive saw cutting of the kitchen floors over the entire length of the hallway
- Digging out the existing deteriorated cast iron sewer pipes
- Piling the earth in the hallway or carting it outside of the facility
- Grading and compacting the bedding for the sewer pipes
- Installing new sewer pipes
- Backfilling the excavations
- Compacting of the backfill
- Pouring new concrete slab where the original flooring was cut out
- Refinishing the flooring
The regional maintenance director was faced with two decisions. Either shut the building down and perform the entire traditional plumbing repair or keep the building open and break the repair into 10 foot sections. If they were to keep the building open, the regional administration staff would have had to put up with extreme noise, dust, mess and disruption for up to two (2) months.
Revive pipes worked on a PD day and a weekend to clean out the pipe and install a cured in place pipe (CIPP) liner without requiring any destruction to the building or inconveniencing the regional administration staff.
Contractor Time on Site: 90% Reduced
Staff Impact: 0 Staff Relocated
Economic Impact: 30% Cost Savings
Regional Maintenance Director Quote – “I used to think about this issue every day. I haven’t thought about it now in over a year.”